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一种新系列的重型柴油机已经设计、开发并投入生产,其缸径为175mm,行程为220mm。它是一种单排立式4缸、6缸和8缸直喷式的多用途柴油机,可以用于发电、船舶和机车等,功率范围 400～960马力,平均有效压力为17巴(17×10~5Pa)。本文主要介绍空气流和燃油流的优化设计、为优化性能进行的热动力计算以及试验数据的对比情况。详细地介绍了配气相位的计算。有关二次喷射的问题,通过减少死容积(dead volumes)已经得到解决。
A new series of heavy-duty diesel engines has been designed, developed and put into production with a bore of 175 mm and a stroke of 220 mm. It is a single-row, vertical 4-cylinder, 6-cylinder and 8-cylinder direct-injection multi-purpose diesel engine that can be used for power generation, ships and locomotives with a power range of 400-960 horsepower and an average effective pressure of 17 bar 10 ~ 5Pa). This article focuses on the optimal design of airflow and fuel flow, thermodynamic calculations to optimize performance, and comparison of test data. The calculation of gas phase is introduced in detail. The issue of secondary injection has been solved by reducing dead volumes.